<HTML style="FONT-SIZE: x-small; FONT-FAMILY: MS Sans Serif"><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1170" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>Jack,</DIV> <DIV> </DIV> <DIV>I have no experience with falling pianos, but I was involved, in a previous life, with designing a structure to pass California's earthquake-proof building codes.  It's been a while, but my recollection is that the most significant load is the side-to-side motion, so it seems plausible that a piano could be tipped over.   Also, we had to hire an engineering firm, licensed in the state of California, who analyzed and approved our design.  You should separate yourself from any design responsibility here.  If the church has gotten some engineering authority to say " if you chain it this way, it will be safe", then go ahead and chain it exactly the way they tell you to.</DIV> <DIV> </DIV> <DIV>just my 2 cents</DIV> <DIV> </DIV> <DIV>Mike Spalding RPT </DIV> <DIV></DIV> <DIV> </DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid"> <DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=jackhouweling@dccnet.com href="mailto:jackhouweling@dccnet.com">Jack Houweling</A> </DIV> <DIV style="FONT: 10pt arial"><B>To: </B><A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech</A></DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> 6/28/2003 12:57:30 AM </DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Earthquake proof</DIV> <DIV><BR></DIV><FONT size=2> <DIV><FONT face=Arial size=2>Hello</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I got a call from a church yesterday . They have  an upright piano that is in the play school</FONT></DIV> <DIV><FONT face=Arial size=2>and want to earthquake proof the piano with hooks and chains to the back of the piano. Has anyone ever heard of a piano falling? Should this be of any concern?</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>I live in Vancouver B.C. </FONT> <FONT face=Arial size=2> ( We are expecting the big one.)</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Jack</FONT></DIV></FONT></BLOCKQUOTE></BODY></HTML>